display a notification when deleting a module
display a notification when deleting a module

fixes CNVS-20920

Screenreaders should be notified when a module is deleted

Test Plan
Senario: Deleting a module with a screenreader
So screenreaders know that a module has been deleted when deleting
modules
Given I have a module
And I'm on the modules page
And I'm using a VoiceOver in Safari
When I navigate to the module admin cog
And I deleted that module
Then a notification message should appear at the top
And it should be read by the screenreader
And it should tell me my module has been deleted
And the module name should be read in the message

Change-Id: I415a67ca98267018f95c09900da835dc05fb3974
Reviewed-on: https://gerrit.instructure.com/56217
Tested-by: Jenkins
Reviewed-by: Dan Minkevitch <2591e5f46f28d303f9dc027d475a5c60d8dea17a@instructure.com>
QA-Review: Jahnavi Yetukuri <ed2b2672ccc2e59e56c0615df7f01b579202e014@instructure.com>
Product-Review: Cosme Salazar <d37f5e06cd46b8fd23ce5553334e09ede5394232@instructure.com>

matematikk-mooc/canvas-lms,shidao-fm/canvas-lms,fronteerio/canvas-lms,kyroskoh/canvas-lms,efrj/canvas-lms,sfu/canvas-lms,Rvor/canvas-lms,kyroskoh/canvas-lms,shidao-fm/canvas-lms,sfu/canvas-lms,snehakachroo1/LSI_replica,sfu/canvas-lms,SwinburneOnline/canvas-lms,Jyaasa/canvas-lms,fronteerio/canvas-lms,AndranikMarkosyan/lms,sdeleon28/canvas-lms,venturehive/canvas-lms,instructure/canvas-lms,tgroshon/canvas-lms,sfu/canvas-lms,redconfetti/canvas-lms,matematikk-mooc/canvas-lms,SwinburneOnline/canvas-lms,Rvor/canvas-lms,utkarshx/canvas-lms,leftplusrightllc/canvas-lms,venturehive/canvas-lms,jay3126/canvas-lms,jay3126/canvas-lms,instructure/canvas-lms,venturehive/canvas-lms,skmezanul/canvas-lms,djbender/canvas-lms,SwinburneOnline/canvas-lms,venturehive/canvas-lms,wrdsb/canvas-lms,greyhwndz/canvas-lms,sfu/canvas-lms,juoni/canvas-lms,tgroshon/canvas-lms,utkarshx/canvas-lms,utkarshx/canvas-lms,narigone/canvas,sdeleon28/canvas-lms,leftplusrightllc/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,fronteerio/canvas-lms,juoni/canvas-lms,kyroskoh/canvas-lms,dgynn/canvas-lms,ShreniiNepal/shrenii_lmp,AndranikMarkosyan/lms,whalejasmine/canvas-lms,HotChalk/canvas-lms,instructure/canvas-lms,eCNAP/CANVAS,HotChalk/canvas-lms,tgroshon/canvas-lms,roxolan/canvas-lms,whalejasmine/canvas-lms,ShreniiNepal/shrenii_lmp,instructure/canvas-lms,grahamb/canvas-lms,shidao-fm/canvas-lms,greyhwndz/canvas-lms,shidao-fm/canvas-lms,grahamb/canvas-lms,redconfetti/canvas-lms,Jyaasa/canvas-lms,wrdsb/canvas-lms,eCNAP/CANVAS,efrj/canvas-lms,leftplusrightllc/canvas-lms,jay3126/canvas-lms,narigone/canvas,eCNAP/CANVAS,instructure/canvas-lms,matematikk-mooc/canvas-lms,AndranikMarkosyan/lms,juoni/canvas-lms,narigone/canvas,roxolan/canvas-lms,antoniuslin/canvas-lms,grahamb/canvas-lms,dgynn/canvas-lms,jay3126/canvas-lms,eCNAP/CANVAS,narigone/canvas,djbender/canvas-lms,djbender/canvas-lms,wrdsb/canvas-lms,redconfetti/canvas-lms,roxolan/canvas-lms,tgroshon/canvas-lms,antoniuslin/canvas-lms,skmezanul/canvas-lms,dgynn/canvas-lms,greyhwndz/canvas-lms,utkarshx/canvas-lms,matematikk-mooc/canvas-lms,sdeleon28/canvas-lms,fronteerio/canvas-lms,Jyaasa/canvas-lms,HotChalk/canvas-lms,roxolan/canvas-lms,efrj/canvas-lms,skmezanul/canvas-lms,ShreniiNepal/shrenii_lmp,efrj/canvas-lms,SwinburneOnline/canvas-lms,AndranikMarkosyan/lms,wrdsb/canvas-lms,greyhwndz/canvas-lms,Rvor/canvas-lms,juoni/canvas-lms,snehakachroo1/LSI_replica,sdeleon28/canvas-lms,instructure/canvas-lms,grahamb/canvas-lms,dgynn/canvas-lms,sfu/canvas-lms,skmezanul/canvas-lms,Jyaasa/canvas-lms,instructure/canvas-lms,kyroskoh/canvas-lms,HotChalk/canvas-lms,ShreniiNepal/shrenii_lmp,redconfetti/canvas-lms,Rvor/canvas-lms,grahamb/canvas-lms,leftplusrightllc/canvas-lms,whalejasmine/canvas-lms,snehakachroo1/LSI_replica,whalejasmine/canvas-lms,antoniuslin/canvas-lms,antoniuslin/canvas-lms,snehakachroo1/LSI_replica